Perfect timing. I was just about to write a rather complex web application. How does this (or PHP in general) compare to, say, PERL in the execution speed, memory usage, and code manageability aspects? I'm sure I can get some quality, unbiased opinions here on the topic.

If we used what was everywhere everyone would be developing websites in.NET to deploy on their Windows intranet. But it's a lot easier to be sarcastic than have a point other than "lol nobody uses Rails" (as if that were even close to true).